No matter how you measure or define weight, and no matter how you define pounds, the answer is "yes".
There are two different kinds of scales. A balance scale measures mass. If a balance scale was used to measure the samples, the answer is obviously yes. A spring scale measures "apparent weight", and "under identical conditions in a laboratory", the apparent weight is proportional to mass. If sample A has some apparent weight and sample B has twice that apparent weight, the answer to the question is still yes because the ratio of the weight of sample B to the weight of sample A is exactly equal to the ratio of the masses.
There are two different pounds. A pound-mass (lbm for short, or just lb) is a unit of mass. A pound-force (lbf for short, and never lb) is a unit of force. Since you said lb, I assume you are talking about pounds-mass. If you are talking about pounds-force it is always a good idea to never, ever use lb to indicate the units.
There are three different definitions of weight. Legally, weight is mass. It would vex the commercial world considerably if the contents of a one pound can of peas weighed something other than one pound anywhere on the Earth, or on the Moon, for that matter. Lawyers and merchants don't give a hoot about what physicists think, but they do care a lot about things that don't measure up.
"Apparent weight" is what a spring scale measures. The apparent weight of some object is the sum of all forces acting on the object except for gravity. The apparent weight (measured in pounds-force) of the contents of a one pound (one pound mass) can of peas varies from place to place on the Earth. It weighs a bit more than 1 lbf in Nome, Alaska, and a bit less than 1 lbf at the top of Mount Kilomanjaro. The apparent weight on the surface of the Moon: about 1/6 lbf. The apparent weight on the International Space Station: very close to zero.
"Actual weight", or just plain weight, is the mass of the object times the acceleration due to gravity. The actual weight of a one pound can of peas also varies a bit from place to place on the Earth, but not as much as does apparent weight. The actual weight on the surface of the Moon: about 1/6 lbf. The actual weight on the ISS: about 0.90 lbf.
Fortunately, you don't have to worry about actual weight here because neither a balance scale nor a spring scale measures actual weight. What measures actual weight? Nothing. There is no way to measure actual weight.